Read docs Updated 2026-06-16
What is VATlayer?
VATlayer is an API that performs validation of VAT numbers.
It is useful for applications and services that process European tax identifiers.
What you can build with VATlayer
E-commerce tax compliance
Validate customer VAT numbers at checkout to apply correct EU tax rates and generate compliant invoices.
Supplier onboarding
Check VAT registration status of vendors before processing B2B payments or contracts.
Accounting system integration
Automate VAT number checks inside ERP or bookkeeping tools to reduce manual verification errors.
Get started with VATlayer
- 1Sign up on the VATlayer site and obtain an API key
- 2Read the endpoint documentation for validation requests
- 3Add the API key to request headers or query parameters
- 4Send HTTPS POST/GET calls with the VAT number to validate
- 5Parse the JSON response for validity status and details
VATlayer: pros & cons
Pros
- +Simple API focused solely on VAT validation
- +HTTPS-only with API key authentication
- +Fast single-purpose responses
- +Useful for EU tax compliance workflows
Cons
- –Narrow scope limited to VAT checks only
- –Requires paid key for production volume
- –No offline or self-hosted option
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Frequently asked questions
An API service that validates VAT numbers, primarily for EU countries.
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